#include <linux/io.h> #include <linux/ioport.h> #include <linux/of_address.h> /** * of_iomap - Maps the memory mapped IO for a given device_node * @device: the device whose io range will be mapped * @index: index of the io range * * Returns a pointer to the mapped memory */ void __iomem *of_iomap(struct device_node *np, int index) { struct resource res; if (of_address_to_resource(np, index, &res)) return NULL; return ioremap(res.start, 1 + res.end - res.start); } EXPORT_SYMBOL(of_iomap);